{"id":3155,"date":"2019-09-02T10:01:03","date_gmt":"2019-09-02T10:01:03","guid":{"rendered":"https:\/\/www.testpreptraining.com\/tutorial\/?page_id=3155"},"modified":"2022-03-03T11:45:58","modified_gmt":"2022-03-03T11:45:58","slug":"amazon-s3-2","status":"publish","type":"page","link":"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-solutions-architect-professional-sap-c01\/amazon-s3-2\/","title":{"rendered":"Amazon S3"},"content":{"rendered":"\n<p>Learn the concepts of Amazon S3 below.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Amazon Simple Storage Service is called as Amazon S3<\/li><li>Provides easy-to-use management features to organize data and configure access controls.<\/li><li>It is designed for 99.999999999% (11 9&#8217;s) of durability<\/li><li>It&nbsp; is an object storage service<\/li><li>Offers industry-leading scalability, data availability, security, and performance.<\/li><li>Use cases include\n<ul>\n<li>Websites<\/li>\n<\/ul>\n<ul>\n<li>mobile applications<\/li>\n<\/ul>\n<ul>\n<li>backup and restore<\/li>\n<\/ul>\n<ul>\n<li>archive<\/li>\n<\/ul>\n<ul>\n<li>enterprise applications<\/li>\n<\/ul>\n<ul>\n<li>IoT devices<\/li>\n<\/ul>\n<ul>\n<li>big data analytics.<\/li>\n<\/ul>\n<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>S3 Access control <\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>defines who can access objects and buckets within S3<\/li><li>type of access (e.g., READ and WRITE).<\/li><li>authentication verifies identity of a user who is trying to access AWS<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Amazon S3 Concepts<\/strong><\/h4>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"594\" height=\"214\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-25.png\" alt=\"Amazon S3\" class=\"wp-image-3361\"\/><\/figure><\/div>\n\n\n\n<p>Buckets \u2013<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>It is a container for objects stored in Amazon S3.<\/li><li>Every object is contained in a bucket.<\/li><li>URL addressing, as if object named photos\/puppy.jpg stored in johnsmith bucket, then URL is http:\/\/johnsmith.s3.amazonaws.com\/photos\/puppy.jpg<\/li><li>Buckets helps to\n<ul>\n<li>organize S3 namespace at highest level<\/li>\n<\/ul>\n<ul>\n<li>identify account responsible for storage and data transfer charges<\/li>\n<\/ul>\n<ul>\n<li>play a role in access control<\/li>\n<\/ul>\n<ul>\n<li>serve as unit of aggregation for usage reporting.<\/li>\n<\/ul>\n<\/li><li>Buckets can be created in a specific region.<\/li><li>Can also configure a bucket every time an object is added to it<\/li><li>S3 generates a unique version ID and assigns it to object.<\/li><\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">Rules for naming S3 buckets in all AWS Regions:<\/h6>\n\n\n\n<ul class=\"wp-block-list\"><li>Bucket names must be unique across all existing bucket names in Amazon S3.<\/li><li>Bucket names must comply with DNS naming conventions.<\/li><li>Thirdly, Bucket names must be at least 3 and no more than 63 characters long.<\/li><li>Bucket names must not contain uppercase characters or underscores.<\/li><li>Next, Bucket names must start with a lowercase letter or number.<\/li><li>Bucket names must be a series of one or more labels. Adjacent labels can separate using a single period (.). Bucket names can contain lowercase letters, numbers, and hyphens. Each label must start and end with a lowercase letter or a number.<\/li><li>Bucket names must not format as an IP address (for example, 192.168.5.4).<\/li><li>When you use virtual hosted\u2013style buckets with Secure Sockets Layer (SSL), SSL wildcard certificate only matches buckets that don&#8217;t contain periods. To work around this, use HTTP or write own certificate verification logic. We recommend that you do not use periods (&#8220;.&#8221;) in bucket names when using virtual hosted\u2013style buckets.<\/li><\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">Objects \u2013<\/h6>\n\n\n\n<ul class=\"wp-block-list\"><li>Fundamental entities stored in Amazon S3<\/li><li>Consist of object data and metadata.<\/li><li>Data portion is opaque to Amazon S3 or stored as it is.<\/li><li>Metadata is a set of name-value pairs that describe object and include <ul><li>date last modified <\/li><\/ul><ul><li>standard HTTP metadata &#8211; Content-Type <\/li><\/ul><\/li><li>Can specify custom metadata at time object stores.<\/li><li>An object is uniquely identified within a bucket by a key (name) and a version ID.<\/li><\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">Keys \u2013<\/h6>\n\n\n\n<ul class=\"wp-block-list\"><li>Unique identifier for an object within a bucket.<\/li><li>Every object in a bucket has exactly one key.<\/li><li>Every object in Amazon S3 can uniquely address as <ul><li>Combination of a bucket, key, and version ID uniquely identify each object <\/li><\/ul><ul><li>web service endpoint, bucket name, key, and optionally, a version. <\/li><\/ul><\/li><li>Example, in URL http:\/\/doc.s3.amazonaws.com\/2006-03-01\/AmazonS3.wsdl, &#8220;doc&#8221; is name of bucket and &#8220;2006-03-01\/AmazonS3.wsdl&#8221; is key.<\/li><\/ul>\n\n\n\n<h6 class=\"wp-block-heading\">Regions<\/h6>\n\n\n\n<ul class=\"wp-block-list\"><li>You can choose geographical region where S3 will store buckets you create.<\/li><li>Choose a region to\n<ul>\n<li>optimize latency<\/li>\n<\/ul>\n<ul>\n<li>minimize costs<\/li>\n<\/ul>\n<ul>\n<li>address regulatory requirements<\/li>\n<\/ul>\n<\/li><li>Objects stored in a region never leave region unless you explicitly transfer them to another region.<\/li><\/ul>\n\n\n\n<p>Amazon S3 Data Consistency Model \u2013<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>S3 provides read-after-write consistency for PUTS of new objects in S3 bucket in all regions with one caveat.<\/li><li>caveat is that if you make a HEAD or GET request to key name (to find if object exists) before creating object, Amazon S3 provides eventual consistency for read-after-write.<\/li><li>S3 offers eventual consistency for overwrite PUTS and DELETES in all regions.<\/li><li>Updates to a single key are atomic. If you PUT to an existing key, a subsequent read might return old data or updated data, but it will never return corrupted or partial data.<\/li><li>High data availability by replicating data across multiple servers within Amazon&#8217;s data centers.<\/li><li>If a PUT request is successful, data is safely stored.<\/li><li>Following behavior for information about changes <ul><li>A process writes a new object to Amazon S3 and immediately lists keys within its bucket. Until change fully propagates, object might not appear in list. <\/li><\/ul><ul><li>A process replaces an existing object and immediately attempts to read it. Until change fully propagates, Amazon S3 might return prior data. <\/li><\/ul><ul><li>A process deletes an existing object and immediately attempts to read it. Until deletion fully propagates, Amazon S3 might return deleted data. <\/li><\/ul><\/li><\/ul>\n\n\n\n<p>A process deletes an existing object and immediately lists keys within its bucket. Until deletion fully propagates, Amazon S3 might list deleted object.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-solutions-architect-associate-table-of-content\/\" target=\"_blank\" rel=\"noreferrer noopener\">Check here for more.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn the concepts of Amazon S3 below. Amazon Simple Storage Service is called as Amazon S3 Provides easy-to-use management features to organize data and configure access controls. It is designed for 99.999999999% (11 9&#8217;s) of durability It&nbsp; is an object storage service Offers industry-leading scalability, data availability, security, and performance. Use cases include Websites mobile&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2471,"menu_order":11,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[16,7],"class_list":["post-3155","page","type-page","status-publish","hentry","category-amazon-aws","tag-amazon-s3","tag-aws"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Amazon S3 - Tutorials (TestPrep Training)<\/title>\n<meta name=\"description\" content=\"Enhance your knowledge level by learning the concepts of Amazon S3 service for AWS Certification Exam Preparation Now!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-solutions-architect-professional-sap-c01\/amazon-s3-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Amazon S3 - 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